Hey again!
Unless there’s a plugin or custom function that deals with this, I think it’s likely that the ‘Date’ link was clicked by accident (that’s happened to me a few times ˉ\_(ツ)_/ˉ ).
If you want to make sure there’s no plugin or bit of code getting in the way, here’s what you can do:
1. Temporarily switch your theme back to the Storefront theme (it’s free)
2. Disable all plugins except for WooCommerce
3. Test to see if the issue has been resolved.
4. If that resolves the issue, then slowly re-enable features until you find the one that’s causing the conflict.
This is best done on a staging site. That’s a copy of your live site, so you can test things out without making changes to your actual site. Some hosting companies offer a staging site service within their hosting plans. If yours does not, there is a great free plugin that will allow you to build a complete staging site with a few button clicks: https://www.ads-software.com/plugins/wp-staging.